Although the new spot’s name, Manon, and address have been reported, details were unknown until now.

The rent on the 15-year lease is about $1 million for space on four floors — priced at $300 a square foot on the ground and $55 a foot on the upper floors. The ground floor was previously occupied by Little Pie Company.

Maison Dellos was represented by Norman Bobrow and Co. President Norman Bobrow and senior director David Tordjman. The landlord, the estate of William Gottlieb, was repped by CBRE’s Sloane Rhulen and Greg Tannor.

Tordjman said Manon’s cuisine won’t be Russian but a mix of modern French, American and pan-Asian styles. “Mr. Dellos isn’t 100 percent Russian,” he explained. “He’s half-Russian and half-French, and he speaks more French than Russian.”

The new restaurant will occupy the first two floors and part of the third, which will also have a wine cellar, Tordjman said. The fourth floor will be used for the company’s offices. Manon will likely open in January or February.

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The joint-venture mega-deal to transform 701 Seventh Ave. is of cyclopean complexity even by Manhattan real-estate standards, involving a half-dozen companies on the investment side plus a $475 million loan from Starwood Capital.

Now Steve Kassin, co-managing partner of investment partner Infinity Urban Century, has spelled out for us more specifics.

Although the completed project will be as-of-right, the developers will retain about 25 percent of the larger of the two structures to exploit grandfathered zoning rules relating to retail and signage requirements.

That will allow installation of the world’s largest LED sign to wrap around the 47th Street corner, replacing six smaller signs there now.

The small building adjacent to the corner, 165 W. 47th St., is part of the package and will be demolished.

Construction should begin in the first half of 2013. The five-story retail base will include a 30,000-square-foot, “Vegas-esque” entertainment/dining venue “specifically built for the traffic that Times Square attracts.” A 500-room hotel is to rise above it and be completed in 2015.

All existing office and retail tenants have signed “irrevocable” lease-termination agreements.

That means that in a few months, longtime tourist fixtures will all be gone: among them Tad’s Steaks, Sbarro and Pig & Whistle.